def process_data(data_list):
    try:
        for i in range(len(data_list)):
            print(data_list[i] + "world")  # 这里假设data_list包含str和其他类型混合的情况
            
    except (IndexError, ValueError, TypeError) as e:
        print(f"发生了错误: {type(e).__name__}, 错误信息: {e}")

process_data([1, 'hello', None])